Inkanyezi eseduze kakhulu emhlabeni

inkanyezi eseduze kakhulu emhlabeni

Kusukela ngo-1915 siye sazi nge-red dwarf, enye yezinkanyezi ezingenakubalwa ezigcwele i-Milky Way futhi okwenzeka njengeseduze neLanga lethu Abantu abaningi bayazibuza ukuthi yini inkanyezi eseduze kakhulu emhlabeni.

Kulesi sihloko sizokutshela ukuthi iyiphi inkanyezi eseduze kakhulu noMhlaba, yiziphi izici enazo kanye nokubaluleka kwayo.

Inkanyezi eseduze kakhulu noMhlaba

i-centauri elandelayo

Emkhathini omkhulu wemithala eyaziwayo, i-Milky Way igqama njengendikimba enkulu yasezulwini. Ubukhulu bayo buyamangalisa, buncane kakhulu abanye abaningi uma beqhathaniswa. Nge Njengoba kulinganiselwa ukuthi kunezinkanyezi eziyizigidi eziyizinkulungwane eziyikhulu ezihlala kuwo, lo mthala unabantu abaningi abamangalisayo. Phakathi kwalezi zinhlaka ezingenakubalwa ezikhanyayo, iLanga lisendaweni emaphakathi, elibusa njengendawo ebalulekile yesimiso sethu samaplanethi. Ukuba seduze kwayo nokujwayelana kwayo kuye kwavusa ilukuluku mayelana nenkanyezi eseduze nomlingani wethu welanga. Ngenhlanhla, sekuyisikhathi eside ososayensi benikeza impendulo yalo mbuzo othakazelisayo.

Inkanyezi eseduze kakhulu neLanga lethu ngu-Proxima Centauri, owaziwa nangokuthi u-Alpha Centauri C. Igama layo lesiLatini lihunyushwa ngokuthi "eduze ne-Centauri," elibonisa ngokunembile indawo yalo phakathi komlaza i-Centauri. Ngaphandle kweminyaka emine kuphela yokukhanya ukusuka eMhlabeni, U-Proxima Centauri akanakubonwa ngaphandle kosizo lwesibonakude. Lokhu kubangelwa ukuhlukaniswa kwayo njenge-dwarf ebomvu, okusho ukuthi inokukhanya okumaphakathi okuphansi futhi incane ngosayizi uma iqhathaniswa nezinye izinkanyezi. Ukuyibeka ngombono, i-Proxima Centauri incane ngokuphindwe kasikhombisa kuneLanga lethu.

I-European Space Agency (ESA) ihlukanise u-Proxima Centauri ngokuthi "inkanyezi evuthayo", okusho ukuthi iyinkanyezi ekhazimulayo eshintshashintshashintshayo futhi emangalisayo ekukhanyeni ngenxa yezinqubo zayo zangaphakathi zokuzulazula. Leli qiniso ngezinye izikhathi libangela ukwanda kokukhanya kwenkanyezi eseduze neLanga lethu.

Izici zenkanyezi eseduze kakhulu noMhlaba

inkanyezi eduze nelanga

Ngokusho kwewebhusayithi yasemkhathini i-Space.com, u-Proxima Centauri unezici nobukhulu obuvame ukuhlotshaniswa nama-dwarfs abomvu, okuwuhlobo oluningi kakhulu lwenkanyezi emthaleni wethu. Ngokukhethekile, le nhlangano yasezulwini inesisindo esilingana ne cishe u-12,5% ​​wesisindo seLanga kanye nobubanzi obungaba ngu-14% wobubanzi beLanga.

I-Proxima Centauri, njengamanye ama-dwarfs abomvu, inesici esisodwa esiyenza ihluke: ikhono layo lokonga amandla, okuholela ekuphileni isikhathi eside. Izazi zezinkanyezi ezicwaninga nge-Proxima Centauri zinqume ukuthi lesi sihlabani sizohlala siseminyakeni ephakathi nendawo iminyaka eyizigidi eziyizinkulungwane ezine. Naphezu kokusondelana ngokuqhathaniswa ngokwemibandela ye-cosmic, u-Proxima Centauri ubonakala emncane ngisho nasesibonakudeni esinamandla i-Hubble, okuyinto igqamisa ubukhulu boMkhathi osizungezile.

Isistimu yenkanyezi eseduze kakhulu neLanga lethu i-Alpha Centauri, etholakala cishe ku-4,36 light years away. (noma amakhilomitha ayizigidi eziyizinkulungwane ezingama-41,2) kude.

Yakhiwe izinkanyezi ezintathu

idlozi elibomvu

Izinkanyezi ezintathu zohlelo lwe-Alpha Centauri Baziwa ngokusemthethweni ngokuthi u-Alpha Centauri A (Rigil Kentaurus), u-Alfa Centauri B (Toliman) kanye no-Alpha Centauri C (Proxima Centauri), njengoba kuqokwe i-IAU.

Lolu hlelo luqukethe izinkanyezi ezintathu ezixhunywe amandla adonsela phansi. U-Alpha Centauri A no-Alpha Centauri B, kanye nenkanyezi yesithathu ebizwa ngokuthi i-Alpha Centauri C (eyaziwa nangokuthi i-Proxima Centauri), bakha isistimu ye-ternary lapho izinkanyezi zizungeza isikhungo esivamile sesisindo.

Iso lenyama, uhlelo lwe-AB kuphela oluvela njengephoyinti elikhazimulayo elilodwa emkhathini wasezulwini. Ngokomlando, kuze kube sekhulwini le-1689, leli phuzu lalibhekwa njengenkanyezi eyedwa, ekhanya kakhulu kumlaza we-Centaur. Umbono wenkanyezi kanambambili, efihlwe kuleli phuzu elikhanyayo, waqale washiwo ngo-XNUMX nguJean Richaud, umJesuit waseFrance, owathola ukuthi ikhona ngesikhathi ebuka inkanyezi enomsila.

I-Alpha Centauri A, inkanyezi yohlobo lwe-G ephuzi, kanye no-Alpha Centauri B, inkanyezi yohlobo oluwolintshi lwe-K, bayisistimu kanambambili ezungezisana ngokuhlobene ngesikhathi esicishe sibe yiminyaka engama-80 (ikakhulukazi, iminyaka engu-79,91). Ngesikhathi sokuzungeza kwazo, lezi zinkanyezi ezimbili zisondelana eduze kwesinye nesinye ngebanga elincane elingu-11,2 AU (elilingana namakhilomitha ayizigidi eziyi-1670 noma cishe ibanga eliphakathi kweLanga neSaturn), kanti ibanga lazo eliphakeme lingu-35,6 AU (cishe amakhilomitha ayizigidi eziyizinkulungwane eziyi-5,3) , elifana nebanga eliphakathi kweLanga nePluto. Ngenxa yobuningi bazo obuqhathaniswayo, zizungeza indawo emaphakathi emkhathini, eyaziwa ngokuthi isikhungo sesisindo, esilingana nezinkanyezi zombili.

U-Proxima Centauri, inkanyezi yesithathu ohlelweni, yaziwa nangokuthi i-Alpha Centauri C ngenxa yokuzungeza kwayo ezinye izinkanyezi ezimbili. Kodwa-ke, kunenkulumompikiswano eqhubekayo mayelana nokuxhumana kwayo nesistimu, njengoba i-orbit yayo enkulu, e-eccentric iphakamisa imibuzo. Naphezu kwalokhu, izinkanyezi ezintathu zibonisa i-parallax elinganayo nokunyakaza okufanele. Ngo-2016, inikeze izilinganiso ezinembe kakhudlwana zejubane lika-Proxima Centauri, isekela ngokuqhubekayo isixhumanisi samandla adonsela phansi phakathi kwezinkanyezi ezintathu.

Umjikelezo we-Orbital

Ukube i-Proxima Centauri ibixhunywe ngempela kwezinye izinkanyezi ezimbili, umjikelezo wayo we-orbital ubuyothatha amakhulu ambalwa eminyaka ezinkulungwane futhi okwamanje ubuzothatha indawo eseduze kakhulu nesimiso sethu sonozungezilanga. Ibanga elimaphakathi phakathi kuka-Proxima Centauri no-Alpha Centauri AB cishe lingama-parsecs angu-0,06, iminyaka engu-0,2 yokukhanya noma amayunithi wezinkanyezi ezingu-13.000 (AU), okulingana izikhathi ezingu-400 ubukhulu be-orbit ye-Neptune. U-Proxima Centauri, inkanyezi ebomvu encane, ingabonwa kuphela ngezibonakude ezinamandla amakhulu.

Ngaphakathi kwalolu hlelo lwezinkanyezi, kukhona okungenani amaplanethi amabili afana noMhlaba ngobukhulu: i-Alpha Centauri Bb, enesisindo esingaba ngu-113% soMhlaba, izungeza i-Alpha Centauri B isikhathi esiyizinsuku ezingu-3.236. Ukwengeza, kukhona i-Alpha Centauri Cb, eyaziwa kakhulu ngokuthi i-Proxima Centauri b, ezungeza i-Proxima Centauri.

Ngithemba ukuthi ngalolu lwazi ungafunda kabanzi mayelana nezici zenkanyezi eseduze kakhulu noMhlaba.


Shiya umbono wakho

Ikheli lakho le ngeke ishicilelwe. Ezidingekayo ibhalwe nge *

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  1. Ubhekele imininingwane: Miguel Ángel Gatón
  2. Inhloso yedatha: Lawula Ugaxekile, ukuphathwa kwamazwana.
  3. Ukusemthethweni: Imvume yakho
  4. Ukuxhumana kwemininingwane: Imininingwane ngeke idluliselwe kubantu besithathu ngaphandle kwesibopho esisemthethweni.
  5. Isitoreji sedatha: Idatabase ebanjwe yi-Occentus Networks (EU)
  6. Amalungelo: Nganoma yisiphi isikhathi ungakhawulela, uthole futhi ususe imininingwane yakho.